remcos | a2f3bb5998f5e8079f4556198531fa771f3b6cfd9cffd8f684e1a30e6191b97a

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
06/02/2023, 10:49

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General

Target

70a0d6207bf07b9d71452c71fc65c9b8335d2099796d70a25ec6f2a03090daa9.exe
Size

2.5MB
MD5

e1c771cceb693ea14bbcde32ac1355fc
SHA1

bc2da06db4b0cc42595b7761ff990e303441cd99
SHA256

70a0d6207bf07b9d71452c71fc65c9b8335d2099796d70a25ec6f2a03090daa9
SHA512

fcbb24d7f938145fb82bd6d1d609a4416d78a9285499078ddabf558cac050319bac06c2b6fccdea3ec558e71c5589fb2bc76c6bee6cb4d02dd2691ded8ef2eff
SSDEEP

24576:CsLDsY5ohQjNm5lGrJrGU/thfLixwfA7DgCBbZoiSNy5aKg88vX6yqlAtVULkfSO:C3FYVr4U/3L7yRAUQKuakLomg0BqKqw

Score

10^/10

remcos ikmerro2023 persistence rat

Malware Config

Extracted

Family

remcos

Botnet

IKMERRO2023

5.2.68.82:1198

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
Explorer.exe
copy_folder
ATM Machine
delete_file
false
hide_file
false
hide_keylog_file
true
install_flag
true
keylog_crypt
true
keylog_file
logs.dat
keylog_flag
false
keylog_folder
1234567ME
mouse_option
false
mutex
12345ME-2V5C4Q
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
Explorer
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

Checks computer location settings 2 TTPs 3 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	70a0d6207bf07b9d71452c71fc65c9b8335d2099796d70a25ec6f2a03090daa9.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	70a0d6207bf07b9d71452c71fc65c9b8335d2099796d70a25ec6f2a03090daa9.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	Explorer.exe

Executes dropped EXE 4 IoCs

pid	Process
2596	Explorer.exe
4656	Explorer.exe
1780	Explorer.exe
3968	Explorer.exe

Adds Run key to start application 2 TTPs 10 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\	70a0d6207bf07b9d71452c71fc65c9b8335d2099796d70a25ec6f2a03090daa9.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Explorer = "\"C:\\ProgramData\\ATM Machine\\Explorer.exe\""	70a0d6207bf07b9d71452c71fc65c9b8335d2099796d70a25ec6f2a03090daa9.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows\CurrentVersion\Run\	Explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Explorer = "\"C:\\ProgramData\\ATM Machine\\Explorer.exe\""	Explorer.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\	Explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows\CurrentVersion\Run\	70a0d6207bf07b9d71452c71fc65c9b8335d2099796d70a25ec6f2a03090daa9.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Explorer = "\"C:\\ProgramData\\ATM Machine\\Explorer.exe\""	70a0d6207bf07b9d71452c71fc65c9b8335d2099796d70a25ec6f2a03090daa9.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Explorer = "\"C:\\ProgramData\\ATM Machine\\Explorer.exe\""	Explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Dgtxdkhrpw = "\"C:\\Users\\Admin\\AppData\\Roaming\\Kyjsafxspwa\\Dgtxdkhrpw.exe\""	70a0d6207bf07b9d71452c71fc65c9b8335d2099796d70a25ec6f2a03090daa9.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Dgtxdkhrpw = "\"C:\\Users\\Admin\\AppData\\Roaming\\Kyjsafxspwa\\Dgtxdkhrpw.exe\""	Explorer.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1496 set thread context of 2636	1496	70a0d6207bf07b9d71452c71fc65c9b8335d2099796d70a25ec6f2a03090daa9.exe	82
PID 2596 set thread context of 3968	2596	Explorer.exe	92

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4164	powershell.exe
4164	powershell.exe
3128	powershell.exe
3128	powershell.exe
2596	Explorer.exe
2596	Explorer.exe
2596	Explorer.exe
2596	Explorer.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1496	70a0d6207bf07b9d71452c71fc65c9b8335d2099796d70a25ec6f2a03090daa9.exe
Token: SeDebugPrivilege	4164	powershell.exe
Token: SeDebugPrivilege	2596	Explorer.exe
Token: SeDebugPrivilege	3128	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3968	Explorer.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 1496 wrote to memory of 4164	1496	70a0d6207bf07b9d71452c71fc65c9b8335d2099796d70a25ec6f2a03090daa9.exe	78
PID 1496 wrote to memory of 4164	1496	70a0d6207bf07b9d71452c71fc65c9b8335d2099796d70a25ec6f2a03090daa9.exe	78
PID 1496 wrote to memory of 4164	1496	70a0d6207bf07b9d71452c71fc65c9b8335d2099796d70a25ec6f2a03090daa9.exe	78
PID 1496 wrote to memory of 2636	1496	70a0d6207bf07b9d71452c71fc65c9b8335d2099796d70a25ec6f2a03090daa9.exe	82
PID 1496 wrote to memory of 2636	1496	70a0d6207bf07b9d71452c71fc65c9b8335d2099796d70a25ec6f2a03090daa9.exe	82
PID 1496 wrote to memory of 2636	1496	70a0d6207bf07b9d71452c71fc65c9b8335d2099796d70a25ec6f2a03090daa9.exe	82
PID 1496 wrote to memory of 2636	1496	70a0d6207bf07b9d71452c71fc65c9b8335d2099796d70a25ec6f2a03090daa9.exe	82
PID 1496 wrote to memory of 2636	1496	70a0d6207bf07b9d71452c71fc65c9b8335d2099796d70a25ec6f2a03090daa9.exe	82
PID 1496 wrote to memory of 2636	1496	70a0d6207bf07b9d71452c71fc65c9b8335d2099796d70a25ec6f2a03090daa9.exe	82
PID 1496 wrote to memory of 2636	1496	70a0d6207bf07b9d71452c71fc65c9b8335d2099796d70a25ec6f2a03090daa9.exe	82
PID 1496 wrote to memory of 2636	1496	70a0d6207bf07b9d71452c71fc65c9b8335d2099796d70a25ec6f2a03090daa9.exe	82
PID 1496 wrote to memory of 2636	1496	70a0d6207bf07b9d71452c71fc65c9b8335d2099796d70a25ec6f2a03090daa9.exe	82
PID 1496 wrote to memory of 2636	1496	70a0d6207bf07b9d71452c71fc65c9b8335d2099796d70a25ec6f2a03090daa9.exe	82
PID 1496 wrote to memory of 2636	1496	70a0d6207bf07b9d71452c71fc65c9b8335d2099796d70a25ec6f2a03090daa9.exe	82
PID 1496 wrote to memory of 2636	1496	70a0d6207bf07b9d71452c71fc65c9b8335d2099796d70a25ec6f2a03090daa9.exe	82
PID 2636 wrote to memory of 2596	2636	70a0d6207bf07b9d71452c71fc65c9b8335d2099796d70a25ec6f2a03090daa9.exe	84
PID 2636 wrote to memory of 2596	2636	70a0d6207bf07b9d71452c71fc65c9b8335d2099796d70a25ec6f2a03090daa9.exe	84
PID 2636 wrote to memory of 2596	2636	70a0d6207bf07b9d71452c71fc65c9b8335d2099796d70a25ec6f2a03090daa9.exe	84
PID 2596 wrote to memory of 3128	2596	Explorer.exe	85
PID 2596 wrote to memory of 3128	2596	Explorer.exe	85
PID 2596 wrote to memory of 3128	2596	Explorer.exe	85
PID 2596 wrote to memory of 4656	2596	Explorer.exe	91
PID 2596 wrote to memory of 4656	2596	Explorer.exe	91
PID 2596 wrote to memory of 4656	2596	Explorer.exe	91
PID 2596 wrote to memory of 1780	2596	Explorer.exe	93
PID 2596 wrote to memory of 1780	2596	Explorer.exe	93
PID 2596 wrote to memory of 1780	2596	Explorer.exe	93
PID 2596 wrote to memory of 3968	2596	Explorer.exe	92
PID 2596 wrote to memory of 3968	2596	Explorer.exe	92
PID 2596 wrote to memory of 3968	2596	Explorer.exe	92
PID 2596 wrote to memory of 3968	2596	Explorer.exe	92
PID 2596 wrote to memory of 3968	2596	Explorer.exe	92
PID 2596 wrote to memory of 3968	2596	Explorer.exe	92
PID 2596 wrote to memory of 3968	2596	Explorer.exe	92
PID 2596 wrote to memory of 3968	2596	Explorer.exe	92
PID 2596 wrote to memory of 3968	2596	Explorer.exe	92
PID 2596 wrote to memory of 3968	2596	Explorer.exe	92
PID 2596 wrote to memory of 3968	2596	Explorer.exe	92
PID 2596 wrote to memory of 3968	2596	Explorer.exe	92

C:\Users\Admin\AppData\Local\Temp\70a0d6207bf07b9d71452c71fc65c9b8335d2099796d70a25ec6f2a03090daa9.exe
"C:\Users\Admin\AppData\Local\Temp\70a0d6207bf07b9d71452c71fc65c9b8335d2099796d70a25ec6f2a03090daa9.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1496
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4164
- C:\Users\Admin\AppData\Local\Temp\70a0d6207bf07b9d71452c71fc65c9b8335d2099796d70a25ec6f2a03090daa9.exe
  C:\Users\Admin\AppData\Local\Temp\70a0d6207bf07b9d71452c71fc65c9b8335d2099796d70a25ec6f2a03090daa9.exe
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:2636
- - C:\ProgramData\ATM Machine\Explorer.exe
    "C:\ProgramData\ATM Machine\Explorer.exe"
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2596
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3128
  - - C:\ProgramData\ATM Machine\Explorer.exe
      "C:\ProgramData\ATM Machine\Explorer.exe"
      4⤵
      Executes dropped EXE
      PID:4656
  - - C:\ProgramData\ATM Machine\Explorer.exe
      "C:\ProgramData\ATM Machine\Explorer.exe"
      4⤵
      Executes dropped EXE
      Adds Run key to start application
      Suspicious use of SetWindowsHookEx
      PID:3968
  - - C:\ProgramData\ATM Machine\Explorer.exe
      "C:\ProgramData\ATM Machine\Explorer.exe"
      4⤵
      Executes dropped EXE
      PID:1780

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\ATM Machine\Explorer.exe

Filesize
2.5MB

MD5
e1c771cceb693ea14bbcde32ac1355fc

SHA1
bc2da06db4b0cc42595b7761ff990e303441cd99

SHA256
70a0d6207bf07b9d71452c71fc65c9b8335d2099796d70a25ec6f2a03090daa9

SHA512
fcbb24d7f938145fb82bd6d1d609a4416d78a9285499078ddabf558cac050319bac06c2b6fccdea3ec558e71c5589fb2bc76c6bee6cb4d02dd2691ded8ef2eff

Download Submit
C:\ProgramData\ATM Machine\Explorer.exe

Filesize
2.5MB

MD5
e1c771cceb693ea14bbcde32ac1355fc

SHA1
bc2da06db4b0cc42595b7761ff990e303441cd99

SHA256
70a0d6207bf07b9d71452c71fc65c9b8335d2099796d70a25ec6f2a03090daa9

SHA512
fcbb24d7f938145fb82bd6d1d609a4416d78a9285499078ddabf558cac050319bac06c2b6fccdea3ec558e71c5589fb2bc76c6bee6cb4d02dd2691ded8ef2eff

Download Submit
C:\ProgramData\ATM Machine\Explorer.exe

Filesize
2.5MB

MD5
e1c771cceb693ea14bbcde32ac1355fc

SHA1
bc2da06db4b0cc42595b7761ff990e303441cd99

SHA256
70a0d6207bf07b9d71452c71fc65c9b8335d2099796d70a25ec6f2a03090daa9

SHA512
fcbb24d7f938145fb82bd6d1d609a4416d78a9285499078ddabf558cac050319bac06c2b6fccdea3ec558e71c5589fb2bc76c6bee6cb4d02dd2691ded8ef2eff

Download Submit
C:\ProgramData\ATM Machine\Explorer.exe

Filesize
2.5MB

MD5
e1c771cceb693ea14bbcde32ac1355fc

SHA1
bc2da06db4b0cc42595b7761ff990e303441cd99

SHA256
70a0d6207bf07b9d71452c71fc65c9b8335d2099796d70a25ec6f2a03090daa9

SHA512
fcbb24d7f938145fb82bd6d1d609a4416d78a9285499078ddabf558cac050319bac06c2b6fccdea3ec558e71c5589fb2bc76c6bee6cb4d02dd2691ded8ef2eff

Download Submit
C:\ProgramData\ATM Machine\Explorer.exe

Filesize
2.5MB

MD5
e1c771cceb693ea14bbcde32ac1355fc

SHA1
bc2da06db4b0cc42595b7761ff990e303441cd99

SHA256
70a0d6207bf07b9d71452c71fc65c9b8335d2099796d70a25ec6f2a03090daa9

SHA512
fcbb24d7f938145fb82bd6d1d609a4416d78a9285499078ddabf558cac050319bac06c2b6fccdea3ec558e71c5589fb2bc76c6bee6cb4d02dd2691ded8ef2eff

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

Filesize
1KB

MD5
4280e36a29fa31c01e4d8b2ba726a0d8

SHA1
c485c2c9ce0a99747b18d899b71dfa9a64dabe32

SHA256
e2486a1bdcba80dad6dd6210d7374bd70ae196a523c06ceda71370fd3ea78359

SHA512
494fe5f0ade03669e5830bed93c964d69b86629440148d7b0881cf53203fd89443ebff9b4d1ee9d96244f62af6edede622d9eacba37f80f389a0d522e4ad4ea4

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\ModuleAnalysisCache

Filesize
53KB

MD5
06ad34f9739c5159b4d92d702545bd49

SHA1
9152a0d4f153f3f40f7e606be75f81b582ee0c17

SHA256
474813b625f00710f29fa3b488235a6a22201851efb336bddf60d7d24a66bfba

SHA512
c272cd28ae164d465b779163ba9eca6a28261376414c6bbdfbd9f2128adb7f7ff1420e536b4d6000d0301ded2ec9036bc5c657588458bff41f176bdce8d74f92

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
16KB

MD5
e587085d0b14b3f04eedc15f9f7d703e

SHA1
8e1b85a18e71a321a432463b70846839878b8db4

SHA256
b96cc14efd59e7fe60801bc93a57447cf1ec7d38090d57a41af2bea51855ff36

SHA512
e9796afeb8dd0f8dccd7f3f471f36fc3a95bc24d9d0fa99958986d5fed36eef6bcde09fbd82ad6b489e29d26d3c38d60c5a6ff25689af34877bdf10edf2237f8

Download Submit
C:\Users\Admin\AppData\Roaming\Kyjsafxspwa\Dgtxdkhrpw.exe

Filesize
2.5MB

MD5
06914d2998f5a97addb2f5f4f93721e8

SHA1
9d71f97ed4a634deae6fe9c4af992309f818c8b1

SHA256
da7c430db04dd9ef9b1dcf1f6134af8e701144ca277bed4f864650b0db199490

SHA512
765620681536be110a084b87d088c2e3d7908855dda7b67a947842f5a66c706e4519ecd599321f6de0d31321f41a581b4e31dc15e6f85d3dee72674868f30fe0

Download Submit
memory/1496-133-0x0000000005460000-0x0000000005482000-memory.dmp

Filesize
136KB

Download
memory/1496-132-0x0000000000570000-0x0000000000802000-memory.dmp

Filesize
2.6MB

Download
memory/2636-143-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2636-144-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2636-145-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2636-148-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/3968-163-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/3968-165-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/3968-164-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/3968-162-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4164-135-0x00000000052E0000-0x0000000005316000-memory.dmp

Filesize
216KB

Download
memory/4164-139-0x0000000006880000-0x000000000689E000-memory.dmp

Filesize
120KB

Download
memory/4164-140-0x0000000007EE0000-0x000000000855A000-memory.dmp

Filesize
6.5MB

Download
memory/4164-138-0x00000000061F0000-0x0000000006256000-memory.dmp

Filesize
408KB

Download
memory/4164-137-0x0000000006180000-0x00000000061E6000-memory.dmp

Filesize
408KB

Download
memory/4164-141-0x0000000006D80000-0x0000000006D9A000-memory.dmp

Filesize
104KB

Download
memory/4164-136-0x0000000005950000-0x0000000005F78000-memory.dmp

Filesize
6.2MB

Download